Abstract
Light-emitting diodes at working condition tend to change its own characteristics effected by heat, therefore, designing of optical power control system will be applied as a light sensor optical power detector for optical power monitoring, as well as adjustments to compensate its performance. Not only additional cost is applied, but also caused problem of directivity of the light sensing generation of an error. This research designed programmed microcontroller as automatic current control to monitor the voltage and the light emitting diodes to control the current mode which achieves automatic optical power adjustment function. Without using the light sensor as a sensing element to dispense optical power, the circuit structure is simplified, this circuit can operate separately in addition to wireless transmitted to the remote host outside the circuit with current voltage and current values, timely information on the current circuit can be observed.
© 2014 Optical Society of America
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